Separable drive for printing presses



Sept. 26, 1939. D. BOYD I SEPARABLE DRIVE FOR PRINTING PRESSES Original Filed June 28, 1938 4 Sheets-Sheet 1 TI'ORNEY.

D. L. BOYD SEPARABLE DRIVE FOR PRINTING PRESSES Sept. 26, 1939.

4 Sheets-Sheet 2 I; f g

Original Filed June 28, 1938 ATTORNEY.

Sept. 26, 1939.

Original Filed June 28, 1938 4 Sheets-Sheet 3 FIGLS INVENTOR.

FIG-6 Sept. 26, 1939. D. L. BOYD SEPARABLE DRIVE FOR PRINTING PRKSSES Original Filed June 28, 1938 4 Sheets-Sheet 4 ATTORNEY.

Patented Sept. 26, 1939 "UNITED STATES PATENT OFFICE 2,173,873 g SEPARABLE DRIVE ron rnm'rme PRESSE Donald L. Boyd, Huntington, W. Va., as signor to. Carb-O-Spot Corporation, Athens, Ohio 3 Claims. (01. 101-1 151) My invention relates to that class of presses,

which is described in my .copending application,

Serial No. 216,192, filed June 28, 1938, of whic this application is a division. 1

As set forth in that application, the'wax carbon which is used in the press must be' melted before it is usable and it also must ;be,maintained at a critical temperature. A

As described in that specification, the heating of the parts and the ink fountain containing the wax carbonis accomplished by circulating a hot fluid through the rolls and a jacket formed on the ink fountain.

This has been found in practiceto be a very satisfactory method of furnishing the requisite heat. It is well known to persons skilled in the art that it is frequently necessary, on a press of this type, to"st op the printing press for various purposes, which are so well understood so as not to require description; If this is done, there is a very grave dangerof the shut down burning both the rollers and the wax carbon.

It has been found in practice that if the carbon exceeds the critical temperature that al-,

though it will turn out what is apparently a perfectly satisfactory piece of work, but when one comes to use it, it will riot transfer, and the job is useless.

My invention has for its object to provide apparatus' whereby the printing part of the press can be stopped for any desired purpose, but the ink fountain and form rollers will continue to revolve, thus entirely avoiding the above difli-. culty.

A further object is to provide for the driving meansfor both the printi and inking mechanis'ms to be synchronized s as to insure uniform operation.

A further object is to provide additional heating m'eans extraneous from the fluid to maintain the desired temperature on the other parts of the press.

My means of accomplishing the foregoing objects may bev more fully comprehended by having reference to the accompanying drawings, which are hereunto annexed and are a part of this specification in which:

Fig. 1' is a side elevation of the gear side of press equipped with my improved separable drive,

Fig. 3 is a fragmentary. sideview showing tlie drivinggears, oll pump, oil pump'connections and ink fountain;

Fig. 4 is a top plan view of the press, showing diagrammatically theJeIationship of its various parts; l

Fig. 5 is a fragmentary detail view showing roller 6 which receives ink from an ink fountain roller I which is mounted'in a partially immersed position in the ink fountainii.

The'ink fountain 8, is provided with a jacket l0 through which may be circulated fluid such as hot oil, for the purpose of supplying the heat necessary to enable the wax carbon to be worked. The form and ink fountain rollers are connected, in series, by means of suitablepipe connections H which lead from a circulating pump l2. The oil passes through the ink fountain roller I and then through pipe connections l3 which lead to the distributor or form roller 6, then passes through pipe connections l3a to the jacket IU of the ink fountain 8. Thence it is returned through pipe 14 to the pump which, as shown, is

driven by a motor Ila, thus insuring a con-- tinuous circulation of the heating fluid. It may be desirable, in some cases, to provide va supply tank, (not shown) which can be connected to the ink fountain and may be controlled by a valve.

The press is driven by belt l5 which drives a pulley I8, carried by a shaft t1, the power may be furnished by a standard motor (not shown).

or any other suitable driving means may be employed.

On the shaft I1, I mount a gear l8 which meshes with a gear l9, loosely mounted and 'slidable ona shaft 20. The gear I9 is provided with a laterally extending hub -2| to. whichhs fitted .a fork 22. Thisfork 'is actuated by a rod 23 which extends to the feeder side of the press, a suitable handlefl being provided for shifting the rod 23. The-gear l9 meshes with the gear 26 which rotates the impression cylinder 5. Obviously, by pulling on the handle 2|, ethe gear l9 willbe disengaged from the gear 28 and from-the gear l8, and the printing mechanism will stop and remain stationary until the operator again presses on the handle it to slide the gear IS on the shaft 20 into mesh with the 'teeth of gears I8 and 26.

The independent drive for the ink fountain roller 1, and form roller consists of a sprocket 3| mounted on the shaft II. This sprocket 3| drives a chain 32, indicated by dotted lines, which in turn drives a sprocket 33 mounted upon a is arranged to swing upon the shaft 11.

It will be clear from the foregoing that the rotation of the form roller 8 and the ink fountainroller 1 is continuous as long as the pulley I6 is driven by the belt I! which rotation is synchronized with the printing press when the gear I9 is in mesh, since both the sprocket 3i and the gear i8 are securedupon a common shaft.

My means of heating the other parts of the press are cle 'ly seen in Fig. 1 and consists of a hood 4|, wh.,l1 is pivotally mounted on a shaft 42 and is held in'position by means of a set screw 43. When work is to be done on the press, this hood can be swung to the position shown in Fig. 1 in dotted lines, thus permitting access to the parts of the press, for any desired purpose.

In operation, it is swung from the position shown in dotted lines to the one shown in full lines. This hood is provided with a plurality of radiant heaters of strip form. In some cases 1 the strip heaters 44 may be omitted ,and the hood 4| will serve to retain the heat otherwise supplied to the parts of the press.

The impression cylinder 5 is surrounded by a somewhat similar hood 45, one portion of which extends around and beneath the plate or printing cylinder 5a. Additional means are provided by a second hood 46 which is pivoted upon a sup port 41 so that it can be swung into the position shown in dotted lines to permit access to the press when necessary; when the press is inoperation, it is in the position shown in full lines. hood is also provided with radiant strip meters 18. In this way I am able to avoid loss of heat from the press as'well as supplying additional heat when necessary to keep the working parts unto the requisite temperature.

As pointed out in the parent application,- the fumes arising from the melted wax carbon when the press is in operation, are quite annoying as they are sickening and sweetish fumes which may prove unhealthful to the operator of the press.

I avoid any deleterious consequences from this cause, by providing an exhaust hood 4! which, as shown in Figs. 1 and.3, is mounted above the ink fountain 8, suitable pipe connections being Y provided to connect the hood 49 to any desired air exhausting apparatus (not shown). In this way, all disagreeable results to the operator from the fumes are overcome.

.-Having described my invention, what I regard as new and desire to secure by Letters Patent is: 1. In arotary press, having a printing cylinder adapted to carry plates for printing, an impression cylinder adapted to contact the ,printing cylinder, a form roller which contacts said print ing cylinder, an ink fountain, an ink fountain roller partially immersed therein in contact with said form roller; means to drive said press and its parts comprising a driven shaft, a sprocket thereon,- a gear on said shaft, a gear on the impression cylinder meshing with a gear on the printing cylinder, a sliding gear intermediate the gear on the driven shaft and the gear on the impression cylinder, manually operable means to disengage said sliding gear whereby the printing mechanism will become stationary while said driven shaft continues to revolve, a chain on said sprocket which drives a second sprockeinto drive a train of gears which rotate said form andink an impression cylinder, 9. form roller adapted to contact said printing cylinder, an ink fountain, an ink fountain roller in contact with said form roller; a common frame supporting said cylinsaid gearing the ink fountain roller, and means in the driving means for disconnecting the drive to the cylinders while maintaining the operation of the ink fountain roller and form roller.

3. In a rotary press, having a heated-printing cylinder adapted to carry plates for printing, a heated impression cylinder adapted to contact the printing cylinder, a heated form roller which contacts said printing cylinder, a heated ink fountain, a heated ink fountain roller partially immersed therein to contact with said form roller; a common frame supporting said cylinders and rollers, driving means for said cyinders and rollers comprising means gearing said form and fountain rollers-together, means to continuously drive the form roller and through said gearing rollers.

DONALD L. BOYD; 

